PSIONICS HANDBOOK:
Astral Construct I-III : Additional Attack, Armor, Fly, Resistance, Sprint, Swim, Trample, Trip
Astral Construct IV-VI : as I-III, plus Buff, Charge, Heavy Armor, Improved Grab, Squeeze
Astral Construct VII-IX : as I-VI, plus Extra Buff, Gore, Superheavy Armor
Brain Mole...